Process of giving silk finish to hosiery, &amp;c.



Barren S'rarns *ATENT Fries.

MAX SARFERT, OF PHILADELPHIA, PENNSYLVANIA.

PROCESS OF GIVING SILK FINISH TO HOSIERY, 800.

SEEOIFICATION forming part of Letters Patent N 0. 667,140, dated January29, 1901.

Application filedMaroh 13, 1900. Serial No. 8,489. (No specimens.)

To all whom it may concern:

Be it known that I, MAX SARFERT, a citizen of the United States,residing in the cityand county of Philadelphia, State of Pennsylvauia,havein vented a new and useful Improvement in Processes for Giving aSilk or Lisle Finish to Hosiery or Knit Goods, of which the following isa specification.

I have found that by singeing hosiery and other fabrics a smooth finishand fine surface and luster can be produced, but that to secure thisresult it is necessaryprior to singeing to subject the goods to such atreatment that the nap or fiber thereof is brought to such a conditionthatsubstantially every portion thereof can be removed by singeing,whereby said improved finish, surface, or luster is produced. It isobvious that the nap and fiber can be removed toa certain extent bysingeing without any such special treatment beforehand; but, as far as Iam informed, singeing the goods without the treatment to which I referdoes not impart the finish which I secure, and although in the followingspecification I set out specifically one way in which my process can besuccessfully carried out, yet I claim, broadly, as my invention aprocess of treating hosiery and other fabrics which consists, first, insubjecting the fabric to treatment that brings the nap or fiber to acondition or which effects a condition of the nap or fiber whereby itcan be more readily and effectually removed by singeing, and thensingeing such fabric. The treatments by which such a condition of thenap or fiber is effected may differ, and the treatment which I haveselected for the purpose of illustrating my process is chemical; but, asbefore set forth, my invention is not restricted to any specifictreatment to which the goods are subjected, but to a process thatembraces the step of treating the fabric to effect a condition of thenap or fiber whereby it can be more readily removed by singeing and inthen singeing.

The process may be carried out in the following manner: The goods aresaturated in a solution which consists of the following ingredients, inabout the proportions given namely, chlorid of soda or chlorid ofpotash, one pound; blue stone, one-half pound, and anilin salt or anilinoil, four or five pounds and is known as anilin black solution. Af-

ter complete saturation the goods are dried in the atmosphere and arethen placed on a former or board, so that the stocking is in such a formthat when singed substantially every portion of the fibers forming thenap or lint is removed, and the former or board, with the stockingthereon, is then passed through a singeing-machine, the nap or fiberbeing effectually removed by the singeing, which latter step produces onthe goods the smooth finish and luster to which I refer. It isunderstood that the former or board above referred to is of the usualconstruction, familiar to those skilled in the art of dyeing, and thatit performs its usual function namely, to stretch or distend thestocking so that its threads are separated or pulled apart. When thestocking thus stretched or dis tended on the former or board is passedthrough the singei ng-machine, the fibers forming the nap or lint areeffectually removed by the singeing operation. The goods are thenfinished, the finisher or finishing agent being, for instance, chrome ofsoda or chrome of potash.

It is understood, of course, that the ingredients composing the solutionin which the goods are saturated may be varied and that the formulawhich I have given is only one by which the process may be carried out.

The particular solution to which I have above referred is an oxidizingor mordanting solution, and after the goods are dried after beingsaturated therein they are in a state of oxidation, and in drying thegoods turn to a greenish hue. In carrying out the process in thismanner, as far as I am informed, the oxidizing effect upon the fabricdue to the solution employed is such that the nap or fiber can beremoved by singeing in a manner impossible to obtain when the goods arenot in a state of oxidation, or, in other words, it is the effectproduced by the oxidation of the solution upon the nap or fiber to beremoved that enables said nap or fiber to be removed so effectually bysingeing and the fine surface, smooth finish, and luster resembling asilk or lisle finish imparted to the goods.

My present invention as above described is contradistinguished frombleaching, since this consists, merely, in the employment of certainpreparations, chief among which are chlorin and sulfurous acid, wherebythe fab rics or other materials subjected to the bleaching agent arefreed from their natural color and rendered white, or nearly so, thestep of bleaching being preceded by certain cleansing processes. I amfamiliar with the art of bleaching and have found by practicalexperience that said process of bleaching completely fails to bring thenap or fiber of stockings or similar fabrics into a conditionwherebysubstantially every portion of said nap can be removed bysingeing, by which step the improved surface, finish, and luster isimparted.

I do not claim herein the article of manufacture described-that is tosay, a stocking from the outer surface of which substantially everyport-ion of the nap or fiber has been removed bysingeing, or, in otherwords, a stocking having a singed outer surface, as this product formsthe subject of claims in another application for patent filed in theUnited States Patent Ofiice September 1, 1900, Serial No. 28,728,forming a division of the present application. Neither do I claim hereinthe process for treating hosiery which consists in stretching ordistendiug the same, whereby the threads are separated or pulled apart,and then singeing the same, as this process forms the subject of a claimin another application for patent filed in the United States PatentQfiice October 12, 1900, Serial No. 32,831, forming the division of thepresent application.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. The herein-described process of treating hosiery and other fabrics,which consists in first, subjecting the fabric to treatment to increasethe combustibility and infiammability of the fibers forming the nap orlint, and then singeing said fabric.

2. The herein-described process of treating hosiery and other fabrics,which consists in first, subjecting the Fabric to treatment to increasethe combustibility and in flammability of the fibers forming the nap orlint, then singeing said fabric and then finishing the same.

3. The herein-described process of treating hosiery and otherfabrics,which consists, first, in subjecting the fabric to chemicaltreatment to effect a condition of the nap or fiber whereby the same ismore readily and effectually removed by singeing; then singeing thefabric; and then finishing, the same.

4. The herein- 'lescribed process for treating hosiery and otherfabrics, which consists in singeing the fabric while in a state ofoxidation; and then finishing the same.

5. The process for treating hosiery and other fabrics which consists insaturating the fabric with an oxidizing solution; then drying the same;and lastly singeing the fabric.

6. Theherein-described processfortreating hosiery and other fabrics,which consists in saturating the fabric with an oxidizing solution; thendrying the same; then singeing the fabric, and lastly finishing the same7. The herein-described process for treating hosiery and other fabrics,which consists in first, saturating the fabric with a solution composedof the following ingredients, namely, an alkaline ehlorid, blue-stone,and anilin salt or anilin oil; then drying the same; then singeing thefabric; and lastly finishing the same.

MAX SARFERT.

Witnesses:

E. HAYWARD FAIRBANKS, O. D. McVAY.

